info.unterrainer.commons.opcuabrowser.parts.ValueReader Maven / Gradle / Ivy

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package info.unterrainer.commons.opcuabrowser.parts;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;
import java.util.concurrent.ExecutionException;
import java.util.stream.Collectors;

import org.eclipse.milo.opcua.stack.core.AttributeId;
import org.eclipse.milo.opcua.stack.core.BuiltinDataType;
import org.eclipse.milo.opcua.stack.core.types.builtin.DataValue;
import org.eclipse.milo.opcua.stack.core.types.builtin.ExpandedNodeId;
import org.eclipse.milo.opcua.stack.core.types.builtin.NodeId;
import org.eclipse.milo.opcua.stack.core.types.enumerated.TimestampsToReturn;
import org.eclipse.milo.opcua.stack.core.types.structured.ReadResponse;
import org.eclipse.milo.opcua.stack.core.types.structured.ReadValueId;

import info.unterrainer.commons.opcuabrowser.OpcUaClient;
import info.unterrainer.commons.opcuabrowser.dtos.ReadResult;
import lombok.Getter;
import lombok.extern.slf4j.Slf4j;

@Slf4j
public class ValueReader {

	private final OpcUaClient client;
	@Getter
	private List results;

	public ValueReader(final OpcUaClient client) {
		super();
		this.client = client;
	}

	public void read(final List ids) throws InterruptedException, ExecutionException {
		read(ids.toArray(new String[0]));
	}

	public void read(final String... ids) throws InterruptedException, ExecutionException {
		results = new ArrayList<>();
		final List nodeIds = Arrays.asList(ids)
				.stream()
				.map(NodeId::parseOrNull)
				.filter(Objects::nonNull)
				.collect(Collectors.toList());
		final List readValueIds = nodeIds.stream()
				.map(nodeId -> new ReadValueId(nodeId, AttributeId.Value.uid(), null, null))
				.collect(Collectors.toList());
		readForReadValueIds(readValueIds);
	}

	public void readForReadValueIds(final ReadValueId... ids) throws InterruptedException, ExecutionException {
		readForReadValueIds(Arrays.asList(ids).stream().filter(Objects::nonNull).collect(Collectors.toList()));
	}

	public void readForReadValueIds(final List ids) throws InterruptedException, ExecutionException {
		results = new ArrayList<>();
		List readValueIds = ids.stream().filter(Objects::nonNull).collect(Collectors.toList());
		// Bulk read call
		final ReadResponse response = client.read(0, TimestampsToReturn.Both, readValueIds);
		final DataValue[] rs = response.getResults();

		if (null != rs)
			for (int i = 0; i < readValueIds.size(); i++) {
				ReadResult rr = new ReadResult();
				ReadValueId id = readValueIds.get(i);
				rr.setId(id.getNodeId().toParseableString());
				rr.setReadValueId(id.toString());
				BuiltinDataType type = getDataTypeOf(rs[i]);
				if (type != null) {
					rr.setType(type.getBackingClass());
					rr.setValue(rs[i].getValue().getValue());
				}
				results.add(rr);
			}
	}

	public BuiltinDataType getDataTypeOf(final DataValue dataValue) {
		if (dataValue.getValue() == null || dataValue.getValue().getDataType() == null)
			return null;
		ExpandedNodeId n = dataValue.getValue().getDataType().orElse(null);
		if (n == null)
			return null;
		return BuiltinDataType.fromNodeId(n);
	}

	public void log() {
		for (ReadResult r : results)
			log.debug("id: [{}] readValueId: [{}] type:[{}] value: [{}]", r.getId(), r.getReadValueId(), r.getType(),
					r.getValue());
	}
}